Tobacco pipe



Jan. 17, 1956 R, F R N 2,731,018

TOBACCO PIPE Original Filed Aug. 25. 1947 Illllll I N VEN TOR.

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United States Patent TOBACCO PIPE Robert O. Ferguson, Bristol, Va., assignor of one-half to Bristol Steel & Iron Works, Inc., Bristol, Va.-Tenn., a corporation of Virginia; James R. Ferguson, administrator of said Robert 0. Ferguson, deceased Original application August 25, 1947, Serial No. 770,443. Divided and this application February 26, 1951, Serial No. 212,750

4 Claims. (Cl. 131195) This invention relates to a tobacco pipe and its prime object is to provide a tobacco pipe which will afford smoking pleasure to the user.

The conventional tobacco pipe will usually enable the smoker to obtain a clean cool smoke when the pipe is first lit. As the smoking continues, however, the smoke becomes hot to a degree which will very often burn the smokers tongue. Also, it is seldom possible to burn all of the tobacco within the bowl of the conventional pipe because the tobacco in the lower heel portion of the bowl becomes soggy from filtering the moisture in the smoke drawn therethrough, as well as from the tobacco juices, etc. Furthermore, the bowl of the conventional pipe becomes quite hot after continued smoking and when such occasion arises, the bowl fails to lower the temperature of the smoke.

The principal object of the invention is to provide a pipe, particularly of the dual bowl type, which has an upper bowl constructed principally for quickly and continuously cooling the combustion chamber thereof.

Yet another object of the invention is to provide a tobacco pipe having an upper bowl provided with cooling passages which take the form of a plurality of recesses having arc-shaped inner walls, a plurality of which recesses are parallel to each other and which thus extend entirely around the outside surface of the upper bowl of the pipe.

Other objects will appear hereinafter.

This application is a division of my application Serial No. 770,443, now Patent No. 2,548,297, filed August 25, 1947.

Referring now to the drawings,

Figure 1 is a side view, partly in section, of the upper pipe bowl; and

Figure 2 is a sectional view taken along the line 2-2 of Figure 1.

The construction shown in Figures 1 and 2 comprises an upper bowl C, having a plurality of passages 26 which are preferably parallel or in the same horizontal plane formed in the peripheral side face of the bowl. If the bowl is constructed of wood or other sawable material these passages may be made by a circular saw to thus provide arc-shaped inner walls as seen in Figure 2.

The base of the upper bowl is provided with inner threads 31 which are adapted to be engaged by mating outer screw threads of the lower bowl (not shown), in a manner well known in the art.

As seen in Figure 2 the bowl has a combustion chamber provided with a bottom or partition 32, and a vertical "ice passageway 29 extends downwardly in a central stem to one or more horizontal passageways 30. These last named passageways intersect each other at right angles at the vertical passageway 29.

The smoke moving downwardly in passageway 29 is divided into four paths before entering the filtering material in the lower bowl, thus causing the smoke to be diffused substantially evenly throughout said filtering material before being drawn into the pipe stem.

It has been found that the cooling qualities of the upper pipe bowl of the structure which includes a pinrality of horizontal passages or cuts, such as is shown in Figures 1 and 2, are greatly facilitated by the presence of such passages or cuts. The cost of manufacture of a pipe bowl having the improved cooling qualities described above is not high as a plurality of pipe bowls of this type may be mass produced by semi-skilled, or even unskilled labor.

It will be understood that modifications may be resorted to without departing from the spirit of the invention, and that I desire to be limited only to the extent set forth in the appended claims.

I claim:

1. An upper pipe bowl having means for connecting said bowl to a lower pipe bowl, said upper bowl having a combustion chamber and an outer surface, means for cooling said surface comprising a series of spaced passages, said passages being parallel to each other in different planes, said passages extending inwardly toward said chamber and each being defined by an arc-shaped back wall, said back walls being concave in configuration.

2. An upper pipe bowl having means for connecting said bowl to a lower pipe bowl, said upper bowl having a combustion chamber and an outer surface, means for cooling said surface comprising a series of spaced passages, said passages being parallel to and independent of each other in different planes, said passages extending inwardly toward said chamber and each being defined by an arc-shaped back wall, said back walls being concave in configuration.

3. An upper pipe bowl having means for connecting said pipe bowl to a lower pipe bowl, said upper pipe bowl having an inner combustion chamber and a circular outer surface, said surface being provided with a plurality of slits, said slits being arcuate in shape and extending inwardly in said bowl toward said chamber, said cuts being defined by concave, arc-shaped, inner walls adjacent said chamber.

4. An upper pipe bowl having means for connecting said pipe bowl to a lower pipe bowl, said upper bowl having a combustion chamber and an outer surface, means for cooling said upper pipe bowl comprising a plurality of slits in different planes around said surface, said slits being parallel to the top of said upper bowl and arranged in pairs, each pair comprising slits located in diagonally opposite portions of the outer surface, each slit of one pair being normal to a slit of another pair in the same plane and staggered about said bowl relative to the cuts in parallel planes, said slits extending inwardly in said bowl toward said chamber, said slits being defined by concave, arc-shaped inner walls adjacent said chamber.

(References on following page) I References Qited in the file of this patent UNITED STATES PATENTS Rothman Apr. 30, 1940 Marshall July 2, 1907 Montgomery Dec. 2, 1924 Grenier Ian. 17, 1928 Mariani Oct. 11, 1932 Powers Nov. 27, 1934 Karlson Oct. 5, 1937 Schulz Feb. 1, 1938 Swift Sept. 18, 1945 Dubois et al. Mar. 12, 1946 Downing Oct; 28, 1947 801111 Mar. 16, 1948 Ferguson Mar. 18, 1952 4 FOREIGN PATENTS Great Britain 1908 Great Britain 1892 Great Britain 1896 Great Britain May 13, 1920 Great Britain July 10, 1924 Great Britain May 5, 1941 OTHER REFERENCES June 15, 1943. 

